SOLUTION: find f^-1(x) if f(x) =2x-1

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Question 36332:
find f^-1(x) if f(x) =2x-1
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
find f%5E-1%28x%29 if f%28x%29+=2x-1
f%28x%29+=2x-1 original
y=2x-1 substitue y-values for f(x)
x=2y-1 to find inverse, switch the 'y' and 'x'
x%2B1=2y add 1 to each side
%28x%2B1%29%2F2=y divide by 2 to get 'y' by itself
f%5E-1%28x%29=%28x%2B1%29%2F2